A comparative study on sorption of perfluorooctane sulfonate (PFOS) by   chars, ash and carbon nanotubes

doi:10.1016/j.chemosphere.2011.04.018

CORC > 北京大学 > 环境科学与工程学院

	A comparative study on sorption of perfluorooctane sulfonate (PFOS) by chars, ash and carbon nanotubes
	Chen, Xi ; Xia, Xinghui ; Wang, Xilong ; Qiao, Jinping ; Chen, Huiting
刊名	chemosphere
	2011
关键词	PFOS Sorption Chars Ash Carbon nanotubes GRANULAR ACTIVATED CARBON PERFLUORINATED SURFACTANTS QUANTITATIVE CHARACTERIZATION REVERSE-OSMOSIS BLACK CARBON REACTIVE DYE WASTE-WATER ADSORPTION KINETICS GROUNDWATER
DOI	10.1016/j.chemosphere.2011.04.018
英文摘要	Perfluorooctane sulfonate (PFOS), as one of emerging contaminants, has been attracting increasing concerns in recent years. Sorption of PFOS by maize straw- and willow-derived chars (M400 and W400), maize straw-origin ash (MA) as well as three carbon nanotubes (CNTs) was studied in this work. The sorption kinetics of PFOS by the six adsorbents was well fitted by the pseudo-second-order model. CNTs reached equilibrium in 2 h, much faster than those by chars (384 h) and ash (48 h). According to the sorption isotherms, both single-walled carbon nanotubes (SWCNT) and MA had high sorption capacities (over 700 mg g(-1)), while the two chars had low sorption capacities (below 170 mg g(-1)) caused by their small BET surface area. In the case of MA, due to its positively charged surface, both hydrophobic interaction and electrostatic attraction involved in the sorption, and the formation of hemi-micelles further favored the sorption. This study suggested that SWCNT and MA were effective adsorbents for PFOS removal from water. Compared to SWCNT, MA is low cost and easy to obtain, so it could be a preferred adsorbent for PFOS removal. (C) 2011 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000291187600003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; 43; ARTICLE; 10; 1313-1319; 83
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/239739]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Chen, Xi,Xia, Xinghui,Wang, Xilong,et al. A comparative study on sorption of perfluorooctane sulfonate (PFOS) by chars, ash and carbon nanotubes[J]. chemosphere,2011.
APA	Chen, Xi,Xia, Xinghui,Wang, Xilong,Qiao, Jinping,&Chen, Huiting.(2011).A comparative study on sorption of perfluorooctane sulfonate (PFOS) by chars, ash and carbon nanotubes.chemosphere.
MLA	Chen, Xi,et al."A comparative study on sorption of perfluorooctane sulfonate (PFOS) by chars, ash and carbon nanotubes".chemosphere (2011).